Adjustable gas-burner



R. V. WESTLIN.

ADJUSTABLE GAS BURNER.

APPLICATION F |LED JAN. 11. m9.

1,3Q7,%Q6. Patented June 17, 1919.

6 (wMw $550 7% Qty RICHARD V. WESTLIN, OF FITCI-TBURG, MASSACHUSETTS.

ADJUSTABLE GAS-BURNER.

Specification of Letters Patent.

Patented June 17, 1919.

Application filed January 11, 1919. Serial No. 270,692;

To all whom it may concern:

Be it known that I, Riel-ram) V. WESTLIN, a citizen of Russia, residing at Fitchburg, in the county of \Vorcester and State of Massachusetts, have invented certain new and useful improvements in Adjustable Gas-Burners, of which the following is aspecification.

My invention relates to burners for gas stoves, and more specifically to that class of burners having means for regulating the area of the flame surface.

My object is to provide a device of this character adapted to be easily applied to the burner of a gas stove, and aifordingmeans for regulating the diameter of the flame surface of the burner to suit vessels of varying sizes from large to small; and thus avoiding waste of gas.

Minor objects will appear in the subjoined description.

An important feature of my invention consists of a plate adapted to lie in flat engagement with the top of an ordinary stove burner and to rotate thereon, and provided with series of perforations adapted to come successively into registration with the perforations in the "burner as the plate is rotated to different positions thereon.

The invention consists in the novel construction and arrangement of the several parts, as will be hereinafter described and claimed, reference being had to the accompanying drawings in which Figure 1 is a top plan view of my improved burner.

Fig. 2 is a transverse vertical section taken centrally through Fig. 1 with the grate omitted.

Fig. 3 is a top plan view of the revolving plate, on an enlarged scale; and,

Fig. 1 is a transverse vertical section of Fig. 3.

The letter A indicates an ordinary burner, as a whole; this burner being provided with the usual star-shaped burner proper B, shown in dotted lines in Fig. 1.

i The arms of the star-shaped burner B are provided with radial rows of openings B the corresponding openings of the respective arms all being respectively equidistant from the center of the burner.

The circular plate 1 is provided at its center with a pipe 2.

This plate 1 rests on top of the starshaped burner B in fiat engagement therewith, and the pipe 2 extends down through the central opening B of theburner.

The plate is provided with a plurality of openings or perforations arranged in concentric-and-radial series, and for convenience of reference in considering these perforations, in their concentric relation they are indicated by 1, 2, 3 and 1, while in their radial relation they are arranged in a number of similar groups, each group consisting of perforations indicated by l 2, 3 and 1 The plate 1 has a concentric slot 3 near its periphery, into which slot is received a pin 1 extending upwardly from the burner. The plate 1 is also provided with a radial hand or pointer 5, and a segmental rack 6. The rack 6 is engaged by a cog wheel 7 011 the inner end of a spindle 8; said spindle being suitably mounted to rotate in the device, and being provided on its outer end with a thumb-andfinger wheel preferably fluted or corrugated on its periphery.

The different series of openings in the plate 1 are arranged to successively come into registration with the openings B of the burner proper as the plate 1 is rotated.

The pipe 2 extending downwardly from the plate 1 through the central opening B of the burner forms an axle of rotation for the plate. This pipe projects down a suflicient distance below the under side of the burner to receive the spring 10. Immediately above the spring and borne upwardly thereby against the under side of the burner is a washer 11 loosely fitting the pipe-axle 2, while at the lower end of the pipe 2 is another Washer or bolt 12 rigidly secured thereto in any preferred manner when the parts are assembled. From this arrangement it will be seen that the spring 10 serves to reliably hold the plate 2 in close engagement with the top of the burner. If preferred the lower end of the pipe 2 may be threaded, and the nut or washer 12 provided with cooperating threads, in which case the tension on the spring 10 may be adjusted.

. On the periphery of my burner I have provided the numerals 1, 2, 3, and 1, and these numerals are so arranged and spaced from each other relatively to the perforations in the burner and plate (radially conseries of openings B of the star-shaped burner. WVhen the hand 5 points at 3, the several radial series of openings 3 of the plate will be in registration with their corre-' sponding openings in the star-shaped burner but it will be observed that while each radial series of openings 4 is composed of one opening from each of the four concentric series of openings (1, 2, 3 and a), the radial series 8* are likewise composed of openings from only three of .the concentric series; and it will be further seen that when the hand 5 points at 2, only openings in the concentric series 1* and 2 will be in registration with the corresponding open- 'ings of the star-shaped burner F13; and likewise, when the hand points at '1, only the inner circle l o'tf the openings in the plate will be in registration with the corresponding openings B of the burner B. From tlns it will be seen that the area of "flame surface of my burner may be increased or diminished at the pleasure of the operator, so that the same burner may be used for any sized vessel from a large pot or .pan down to a tin cup or bowl, without wasting gas at any time, or having the flame going up aroundthe sides of the "bowl or small vessel and burning or scorching the contents around the sides.

The stop 4. working in the slot 3 prevents the ;plate 1 from rotating a sufficient distance to permit the rack G to move out of engagement with the cog wheel 7 but if the rack 6 be extended all around the plate 1, the slot 3 and the stop 4 can be dispensed with. V

Asto the operation of my device it :need only be said 'in-addition to the foregoing, that when a very small area of flame is desired, the plate 1 is revolved forwardly "by the "finger wheel 9 till the hand 5 points at the numeral 1 on the periphery of the burneigthen gas can only escape through the inner circle 1 of the concentric openings. When the hand. '5 is brought to point at 2, the two inner circles 1 and 2 will be in use; and so on.

It will be noticed that the pipe 2, being open at its top andbottom, leaves the burner provided with'a central ai'r'opening as usual with ordinary burners.

Having now described my invention, what I claim-as new and desire to secure by Letters Patent is 1. In a device of the character described, a burner "having its flame surface disposed in a curvilinear plane and provided with perforations arranged in concentric and radial series for the escape of fuel; a curvilinear p'late'adapted to lie in "flat engagement with the surface of the burner ahd to rotate thereon, and having perforations corresponding in number and relative p0si- Copies ofthis patent may be obtained 'for 'tion to those of the burner, whereby all the openings in the burner may be uncovered at "one time; sald plate also having addltlonal perforations arranged to form additional radial rows of openings; the radial rows thus formed by said additional perforations having successively less openings than the number of perforations in the radial rows of perforationsin the burner.

2. In a device of the character described, a burner having its flame surface disposed in a curvilinear plane and provided with perforations arranged in concentric series for the escape of fuel; a curvilinear plate adapted to lie in flat engagement with the surace 0f the burner and to rotate thereon, and having perforations corresponding to those of the burner, said plate also having additional perforations arranged to successively come into registration with the perforations of the burner when the plate is 'rotatedthereon, openings in the burner and plate being arranged to come into registration with each other in increasingnumbers "when the plate is rotated in one and in de- .creasing numbers when the plate "is rotated in the other direction.

3. In a device of the character described,

a burner having its flame surface disposed in a plane and provided with perforations .for the escape of the fuel, said perforations being arranged 'in" concentric and radial series; a rotatable plate adapted to lie in flat engagement with the burner and also provided with "perforations arranged in concentric-and-radial series and adapted to COIlleihto registration with the perforations of theburner as the plate is rotatedthereon, said cooperating perforations of the burner and plate being arranged to increase the flame area of the burner when the plate is rotated in one direction and to decrease it when the plate is rotated in the other direction; and means for manually controlling the plate.

4. In a device of the character described, a burner'having afiat ciuvilinear'flalne surface with an opening for 'a -dra'ft of air at the center of said flame surface; a rotatable plate havingat its center ahollow aXleeX- tending downwardly through the central opening of the burnerto a point below the burner; a spring mounted 011 the lower end of said axle and arranged to hold the plate in close engagement with the 'burner, said burner and plate having perforations adapted to coiipelrate with each other and arrangedto give varying areas of flame surface according to the rotatable position :0" the plate relatively to the burner.

In testimony whereof I zillix my signature RPCHARD V. WVE S'TIJIN.

five cents each, by addressing the Commissioner of E'atents, Washington, D. 0. 

